Silva RG da, Gondim AG. Comparisons of the heat tolerance of Sindi and Jersey cattle and Sindi Jersey crosses in the hot Amazon region. I. The Sindi, 3/4 Sindi 1/4 Jersey and 3/8 Sindi 5/8 Jersey. PAB. 2014;6(1):37-44. doi:10.1590/S1678-3921.pab1971.v6.17727